Sat, 14 March 2026, 05:00 UTC — Sun, 15 March 2026, 05:00 UTC 
On-line
A tkbctf event.
Format: Jeopardy 
Official URL: https://alpacahack.com/ctfs/tkbctf5
This event's future weight is subject of public voting!
Event organizers
tkbctf5 is a Jeopardy-style CTF organized by TPC, CTF team from the University of Tsukuba.
It features a wide range of challenges spanning beginner to advanced levels across the following categories: Web, Crypto, Reversing, Pwn, and Misc.
Discord Server:
https://discord.gg/e99hUyqXrT
185 teams total
| Place | Team | CTF points | Rating points | |
|---|---|---|---|---|
| 1 | full_weak_engineer | 5347.000 | 50.000 | |
| 2 | young (coo) | 4847.000 | 35.162 | |
| 3 | 0xL4ugh | 4161.000 | 27.788 | |
| 4 | TokyoWesterns | 3877.000 | 24.377 | |
| 5 | TSG | 3537.000 | 21.537 | |
| 6 | alchemy1729 | 3353.000 | 19.844 | |
| 7 | PwnSec | 3215.000 | 18.603 | |
| 8 | InitCredGang | 3119.000 | 17.708 | |
| 9 | Dokgodai | 3071.000 | 17.136 | |
| 10 | tobira | 2715.000 | 15.194 | |
| 11 | leulleuleuleul | 2691.000 | 14.855 | |
| 12 | Pandas | 2669.000 | 14.562 | |
| 13 | mizuame_qwen3.5 | 2634.000 | 14.238 | |
| 14 | ROPgods | 2516.000 | 13.549 | |
| 15 | DoUknowKimcHi | 2503.000 | 13.369 | |
| 16 | Temperature0 | 2496.000 | 13.233 | |
| 17 | Ch0wn3rs | 2496.000 | 13.141 | |
| 18 | ACERGION | 2357.000 | 12.409 | |
| 19 | Lv1x | 2327.000 | 12.196 | |
| 20 | Hacker-Kaz | 2228.000 | 11.667 | |
| 21 | Cyber Eng McGill | 2193.000 | 11.444 | |
| 22 | CYBERDUNE CLUB | 2185.000 | 11.352 | |
| 23 | pwn4s0n1c | 2170.000 | 11.233 | |
| 24 | urandom | 2135.000 | 11.024 | |
| 25 | LappungCTF{} | 2132.000 | 10.968 | |
| 26 | amano-amane | 1968.000 | 10.163 | |
| 27 | ./Vespiary | 1917.000 | 9.889 | |
| 28 | Han Shangyan Solo Run | 1808.000 | 9.346 | |
| 29 | lydxn | 1641.000 | 8.535 | |
| 30 | RE:UN10N | 1612.000 | 8.370 | |
| 31 | NUT Flaggers | 1545.000 | 8.030 | |
| 32 | SecurityCore v0 | 1526.000 | 7.916 | |
| 33 | akita neru | 1480.000 | 7.677 | |
| 34 | ChunjaSaurus | 1454.000 | 7.533 | |
| 35 | CyberRookie | 1445.000 | 7.470 | |
| 36 | CLPWN | 1332.000 | 6.922 | |
| 37 | WillHackForBeer | 1303.000 | 6.768 | |
| 38 | TR1NITY | 1301.000 | 6.741 | |
| 39 | VOID_Walkers | 1295.000 | 6.696 | |
| 40 | snowbird91 | 1294.000 | 6.675 | |
| 41 | toto-15 | 1180.000 | 6.127 | |
| 42 | mikio815 | 1170.000 | 6.066 | |
| 43 | G3 | 1153.000 | 5.972 | |
| 44 | CyKOR | 1145.000 | 5.922 | |
| 45 | deebato is my goat | 1133.000 | 5.853 | |
| 46 | Xyl0n | 1054.000 | 5.471 | |
| 47 | PHREAKS 2600 | 1023.000 | 5.315 | |
| 48 | milworms | 1012.000 | 5.252 | |
| 49 | onotch | 1003.000 | 5.200 | |
| 50 | Nattt | 935.000 | 4.872 | |
| 51 | Pixel Perfecter | 923.000 | 4.806 | |
| 52 | Dedenne | 877.000 | 4.581 | |
| 53 | UoASFC | 877.000 | 4.572 | |
| 54 | zeosutt | 869.000 | 4.526 | |
| 55 | sgwr | 859.000 | 4.471 | |
| 56 | LK | 828.000 | 4.318 | |
| 57 | HackingForSushi | 819.000 | 4.268 | |
| 58 | suru | 818.000 | 4.256 | |
| 59 | fsharp_hk | 798.000 | 4.155 | |
| 60 | h1r@n0_n1nj45 | 792.000 | 4.120 | |
| 61 | spookies | 792.000 | 4.113 | |
| 62 | hamayanhamayan | 791.000 | 4.102 | |
| 63 | hello world has been taken | 747.000 | 3.889 | |
| 64 | ______________@ | 738.000 | 3.841 | |
| 65 | Tacos | 713.000 | 3.718 | |
| 66 | xyx | 687.000 | 3.591 | |
| 67 | A | 667.000 | 3.492 | |
| 68 | owo | 649.000 | 3.402 | |
| 69 | PunkyDediPunky | 649.000 | 3.397 | |
| 70 | m1z0r3 | 647.000 | 3.382 | |
| 71 | Walaoweh | 623.000 | 3.265 | |
| 72 | S | 617.000 | 3.232 | |
| 73 | MMA | 583.000 | 3.068 | |
| 74 | MessiOfCTF | 578.000 | 3.040 | |
| 75 | parabola0149 | 577.000 | 3.031 | |
| 76 | tes | 565.000 | 2.971 | |
| 77 | dcs | 554.000 | 2.915 | |
| 78 | mlab705 | 548.000 | 2.883 | |
| 79 | Thunder | 541.000 | 2.846 | |
| 80 | G3n3s1s | 531.000 | 2.795 | |
| 81 | 16j | 508.000 | 2.684 | |
| 82 | ymzx | 502.000 | 2.652 | |
| 83 | okadai-dsc | 493.000 | 2.606 | |
| 84 | x | 493.000 | 2.603 | |
| 85 | RJ45 | 493.000 | 2.599 | |
| 86 | jaspritbumrah | 493.000 | 2.596 | |
| 87 | 0n1shi | 493.000 | 2.592 | |
| 88 | TeamAW | 493.000 | 2.589 | |
| 89 | hiikunZ | 442.000 | 2.347 | |
| 90 | miso | 399.000 | 2.143 | |
| 91 | 8128 | 398.000 | 2.136 | |
| 92 | i am not a sheeeeep | 390.000 | 2.095 | |
| 93 | bab | 389.000 | 2.088 | |
| 94 | Triple Triple | 389.000 | 2.085 | |
| 95 | sayonara | 389.000 | 2.082 | |
| 96 | dokkoisyo | 387.000 | 2.070 | |
| 97 | {0ne_R3d_Ey3} | 386.000 | 2.062 | |
| 98 | the spectrum boys | 386.000 | 2.060 | |
| 99 | Ramen Hashikure | 372.000 | 1.992 | |
| 100 | BYK | 372.000 | 1.989 | |
| 101 | sh111m0 | 372.000 | 1.987 | |
| 102 | Oinodecam | 372.000 | 1.984 | |
| 103 | ryuboku | 372.000 | 1.982 | |
| 104 | snocc | 361.000 | 1.928 | |
| 105 | ForFun | 343.000 | 1.842 | |
| 106 | Achumi_SG | 301.000 | 1.643 | |
| 107 | SNCT | 290.000 | 1.590 | |
| 108 | weakly_acidic | 276.000 | 1.522 | |
| 109 | mizore_fuyu | 265.000 | 1.468 | |
| 110 | Yurubo | 265.000 | 1.466 | |
| 111 | tab | 265.000 | 1.464 | |
| 112 | Auth0rShip | 265.000 | 1.462 | |
| 113 | sato888888 | 265.000 | 1.460 | |
| 114 | VN_SA | 265.000 | 1.458 | |
| 115 | AUTOEXEC.BAT | 265.000 | 1.456 | |
| 116 | shimomo | 265.000 | 1.455 | |
| 117 | 1337ophellia | 265.000 | 1.453 | |
| 118 | IgelsCTF | 265.000 | 1.451 | |
| 119 | Predic | 220.000 | 1.239 | |
| 120 | T4k0y4k1 | 195.000 | 1.120 | |
| 121 | MR!JK! | 188.000 | 1.086 | |
| 122 | roro | 184.000 | 1.065 | |
| 123 | olifog | 182.000 | 1.054 | |
| 124 | N30Z30N | 177.000 | 1.029 | |
| 125 | (---) | 177.000 | 1.028 | |
| 126 | 86 | 177.000 | 1.026 | |
| 127 | Tan90909090 | 170.000 | 0.992 | |
| 128 | bup11f | 169.000 | 0.985 | |
| 129 | rsk0315 | 169.000 | 0.984 | |
| 130 | haihuiliyuyuan | 169.000 | 0.982 | |
| 131 | naoki-wa | 169.000 | 0.981 | |
| 132 | reikreikreik | 169.000 | 0.980 | |
| 133 | FlyingMelonPan | 169.000 | 0.978 | |
| 134 | 1234_nickychen | 169.000 | 0.977 | |
| 135 | iaccep | 169.000 | 0.975 | |
| 136 | nishishinjuku-ctf | 169.000 | 0.974 | |
| 137 | ilovealpaca | 169.000 | 0.973 | |
| 138 | M | 169.000 | 0.971 | |
| 139 | SMA | 169.000 | 0.970 | |
| 140 | G3NESI5 | 169.000 | 0.969 | |
| 141 | itzGuren | 169.000 | 0.967 | |
| 142 | KTCG Community | 169.000 | 0.966 | |
| 143 | susumu | 169.000 | 0.965 | |
| 144 | daifuku | 169.000 | 0.964 | |
| 145 | as a kusa | 107.000 | 0.673 | |
| 146 | bach123 | 107.000 | 0.672 | |
| 147 | J | 96.000 | 0.619 | |
| 148 | fsoci4ty | 96.000 | 0.618 | |
| 149 | Pimpest | 96.000 | 0.617 | |
| 150 | balls | 88.000 | 0.578 | |
| 151 | yowayowa | 88.000 | 0.577 | |
| 152 | ri5e | 88.000 | 0.576 | |
| 153 | mopalstene1 | 88.000 | 0.575 | |
| 154 | omame_lonely | 81.000 | 0.541 | |
| 155 | _H0nekk0_ | 81.000 | 0.540 | |
| 156 | NoStevesHere | 81.000 | 0.539 | |
| 157 | power_chan | 81.000 | 0.538 | |
| 158 | GattoArtz | 81.000 | 0.537 | |
| 159 | singetu0096 | 81.000 | 0.536 | |
| 160 | ga tau | 81.000 | 0.535 | |
| 161 | Aw3k4n | 81.000 | 0.534 | |
| 162 | cats | 81.000 | 0.533 | |
| 163 | labupump | 81.000 | 0.532 | |
| 164 | $(Straw Hats) | 81.000 | 0.531 | |
| 165 | shiiiba | 81.000 | 0.530 | |
| 166 | n0t_th3_t0p | 81.000 | 0.529 | |
| 167 | alonebone | 81.000 | 0.528 | |
| 168 | InsertCointoPwn | 81.000 | 0.528 | |
| 169 | SOTB | 81.000 | 0.527 | |
| 170 | stark24 | 81.000 | 0.526 | |
| 171 | ksan | 81.000 | 0.525 | |
| 172 | mono | 81.000 | 0.524 | |
| 173 | dirthteam | 81.000 | 0.523 | |
| 174 | Team_baumroll1234 | 81.000 | 0.522 | |
| 175 | Bassel | 81.000 | 0.522 | |
| 176 | YMD_HK | 81.000 | 0.521 | |
| 177 | bliutech | 81.000 | 0.520 | |
| 178 | 0_Clicks | 81.000 | 0.519 | |
| 179 | La Pulga | 81.000 | 0.518 | |
| 180 | 07 t3am | 81.000 | 0.518 | |
| 181 | CyberSec | 81.000 | 0.517 | |
| 182 | hiringnoone | 81.000 | 0.516 | |
| 183 | xtraa | 81.000 | 0.515 | |
| 184 | gyr0ghost | 81.000 | 0.515 | |
| 185 | ChimakiCpp | 81.000 | 0.257 | |
